Fontana Chrome 3-Function Thermostatic Mixer FAQ
Three-Outlet Control, 38°C Calibration & Concealed Valve Commissioning
This chrome wall-mounted shower mixer combines a solid brass concealed valve,
automatic thermostatic regulation, and three individual controls for independently routed shower functions.
How should the three shower outlets be assigned during rough-in?
Route and label each concealed branch for its designated shower function, then verify that the three controls activate the intended rainfall shower, hand shower, and auxiliary outlet before wall closure.
How should the thermostatic control be calibrated at the 38°C reference?
Operate the valve until the mixed-water temperature stabilizes, measure the discharge at the 38°C index, and realign the temperature handle if the measured value differs from the marked setting.
How should outlet isolation be verified during commissioning?
Operate each function separately under normal pressure and confirm stable flow from the selected branch without bypass, dripping, or unintended discharge through either inactive outlet.
Which concealed components require testing before waterproofing?
Pressure-test the hot and cold inlets, brass valve body, thermostatic cartridge chamber, all three function-control seals, and every outlet branch while the complete assembly remains accessible.